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Rosalia town, WA

ZIP 99170 — Climate & Environment

Source: U.S. Census Bureau ACS 2019–2023 5-Year Estimates. Page data updated 2026-08-02.

Middle ClassLow Snow Area

Climate, disaster risk, air quality, and environmental safety

Environment & Risk in ZIP Code 99170

Disaster Risk (FEMA NRI)

County-linked natural hazard risk from FEMA National Risk Index — useful for comparing insurance and disaster exposure.

FEMA’s National Risk Index rates natural-hazard risk for Rosalia town, WA as Very Low (composite score 39.8), which is relatively lower than many U.S. communities. The strongest component scores on US5 are wildfire (68.3) and flood (58.8). These scores are county-linked NRI values published for planning context — all ZIP codes in the same county share the same composite score on US5. Useful when comparing insurance and disaster exposure across areas, not a substitute for a parcel-level flood or fire determination.

Overall rating
Very Low
Risk index
39.8
Flood risk
58.8
Wildfire risk
68.3
Earthquake risk
55.1
Tornado risk
10.4
Winter weather risk
27.5
Hail risk
39.6
Air Quality (EPA AQI)

County-level annual air quality from EPA. Good days = healthy to breathe; unhealthy = sensitive groups or worse.

20
Median AQI
93.8%
Good Days

Air quality healthy to breathe

0.0%
Unhealthy / Hazardous

Sensitive groups or worse

Climate & Weather in ZIP Code 99170

Climate normals for Rosalia town, WA show little to no average snow and around 18.4 inches of annual precipitation. Pair that with FEMA NRI hazard context (overall rating Very Low) when evaluating long-term housing and insurance exposure.

7-day weather forecast

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Sunrise, sunset & moon

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Monthly Temperature

30-year climate normals (avg. monthly temperature)

Climate Data
Hardiness Zone
6b
Annual Snow Days
0
Annual Precipitation
18.4 in
FEMA NRI rating
Very Low

Climate & Environment key statistics

Climate statistics
Climate
Hardiness zone6b
Annual precip (in)18.4
Snow days0
Broadband access77.4%
Risk & Air Quality statistics
Risk & Air Quality
NRI ratingVery Low
NRI risk index39.8
Flood risk (NRI)58.8
Wildfire risk (NRI)68.3
IRS net migration55
Median AQI20
Good AQI days93.8%